DATA TOOLS / INTERACTIVE DEMO
A small browser tool for everyday CSV cleanup. Trim extra spaces, remove blank rows and duplicates, then preview and download the result without uploading your data.
Parse quoted fields, commas, and embedded line breaks
Choose your cleanup rules and inspect the result
Download CSV with optional spreadsheet formula protection
A SMALL TOOL FOR MESSY DATA
Comma-separated CSV, including quoted fields and line breaks. Up to 2,000 rows, 50 columns, and 120,000 characters. Your text is not uploaded or saved.
| Name | Role | City |
|---|---|---|
| Ada | Developer | Nairobi |
| Sam | Designer | Accra |
| Mina, Jr. | Creator | Lagos |
Showing all 3 data rows. The header is included in your download.
This is a frontend demonstration. There are no accounts, backend APIs, or shared databases.
BEHIND THE BUILD / DATA TIDY
Look inside the parsing, cleanup rules, and export decisions behind this browser tool.
THE IDEA
Small CSV files often need a few practical fixes: extra spaces, blank rows, or duplicated records. Data Tidy makes those choices visible and lets you inspect the result before exporting it.
The browser parses the pasted text, applies the selected cleanup rules, and creates the download locally. The preview and counts update as the input changes. The CSV text is not uploaded by this tool.
CSV parsing · explicit cleanup rules · local export
TRY IT FOR YOURSELF
Keep the header, trim cells, and compare the blank-row and duplicate counts.
A value such as “Mina, Jr.” stays in one field rather than becoming two columns.
The download includes every cleaned row. Check the text-protection option before opening it in a spreadsheet.
THE CHOICES THAT MATTER
A CSV field can contain a comma, an escaped quote, or a line break. The parser tracks quoted fields rather than splitting every line on commas. It handles a byte-order mark and common line endings, and explains malformed quotes instead of guessing at their meaning.
Trimming, blank-row removal, and duplicate removal are separate controls. Duplicate checks compare complete row arrays, and a selected header is kept separate from the data. Rows with unequal widths are shown with padding in the preview while the download preserves their actual fields.
Optional spreadsheet text protection prefixes formula-like cells with an apostrophe and reports how many cells change. It also affects negative-number text, so the toggle matters. The download correctly quotes special fields and includes all cleaned rows, not just the preview.
Comma-separated text only, with limits of 120,000 characters, 2,000 parsed rows, and 50 columns per row.
The preview shows at most ten data rows. This tool does not import Excel workbooks, infer data types, merge near-duplicates, or save your input between visits.
For a repeated business workflow, agree the data rules first. The same sequence—validate, transform, inspect, export—could then become an automated process with a record of each run.
The download contains the demo’s actual source files and a short guide. It is a source extract for reading and reuse within a React project, rather than a separate installed app.
FrontendInteractive demo
A little structure for your next big idea. Plan tasks, track progress, and keep your focus.
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Make requests, read responses, and see what a well-structured API could look like.